Liquid level sensor



FIG. 1 is a top side view of the liquid level sensor, showing the new design;

FIG. 2 is a bottom side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a right-side view thereof;

FIG. 6 is a rear elevation view thereof;

FIG. 7 is an exploded perspective view taken from the front, right, and top side; and,

FIG. 8 is a perspective view taken from the rear, bottom, and left side thereof. 

The ornamental design for a liquid level sensor, as shown and described. 